Light from a galaxy, having wavelength `6000 Å` is found to be shifted towards red by `50 Å`. Calculate velocity of recession of the galaxy.

A red shift of 60 Å is observed in light of wavelength 5000 Å coming from a distant red gaint star. Calculate the velocity of the distant nebula.

The wavelength of light coming from a distant galaxy is found to be 0.5% more than that coming from a source on earth. Calculate the velocity of galaxy.

The wavelength of light coming from a distant galaxy is found to be 0.5% more than that coming from a source on earth. Calculate the velocity of galaxy.

Due to Doppler effect, the shift in wavelength observed is 0.1 Å, for a star producing a wavelength 6000 Å. The velocity of recession of the star will be

If light from a galaxy observed on the earth's surface has a red shift, then